Can all gases be ionized to make a plasma?

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Discussion Overview

The discussion revolves around the ionization of gases and the conditions under which they can be transformed into plasma. Participants explore the definitions of ionization, the states of matter, and the possibility of gases having solid and liquid forms.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants assert that any gas can be turned into a plasma through ionization, which involves breaking apart electrons from atoms or molecules.
  • There is a discussion about various methods of ionization, including superheating, high voltage, and ionizing radiation.
  • Participants mention that plasma is a fluid made up of ions and that it is easier to form plasma at low densities due to reduced recombination of electrons and ions.
  • Questions arise regarding the existence of solid and liquid forms for all gases, with some participants suggesting that almost every gas can be made into liquid and solid states, though uncertainty remains about specific gases like carbon.
  • Some participants clarify that gases can condense into liquids and that there is a triple point where solid, liquid, and gas can coexist in equilibrium.
  • There is a mention of carbon potentially existing as a liquid under extreme pressure, but this is not universally agreed upon.
  • A participant inquires about the feasibility of using a high voltage RF emitter to ionize carbon gases under pressure.

Areas of Agreement / Disagreement

Participants generally agree that gases can be ionized to form plasma, but there is no consensus on whether every gas can be converted into liquid and solid forms. The discussion remains unresolved regarding specific gases like carbon and the conditions required for their phase changes.

Contextual Notes

Some claims about the states of matter and ionization processes depend on specific conditions and definitions that are not fully explored in the discussion. There are also unresolved questions about the behavior of certain gases under varying pressures and temperatures.

Dakota
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I sort of new to the states of matter, so please use English (explain what all the big words mean). First of all what does ionizing even mean? second every type of matter of 4 states?
 
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Yes, any gas can be turned into a plasma. Ionize means to break apart some or all electrons from the nucleus of an atom or molecule. Of course, if you fully ionize a molecule by taking away all the electrons, it will cease to be a molecule since there's nothing holding the elements together. A plasma is a fluid made up of ions.

There are many more than four states of matter. But the basic ones are solid, liquid, gas, and plasma.
 
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Khashishi said:
Yes, any gas can be turned into a plasma. Ionize means to break apart some or all electrons from the nucleus of an atom or molecule. Of course, if you fully ionize a molecule by taking away all the electrons, it will cease to be a molecule since there's nothing holding the elements together. A plasma is a fluid made up of ions.

There are many more than four states of matter. But the basic ones are solid, liquid, gas, and plasma.
Thank you so much. So just to clarify you do get plasma by ionizing gas. Do you ionize something by super heating it? Thank you so much!
 
That is one way to ionize something. You can also use high voltage or ionizing radiation. It is easier to form a plasma at low densities, since there is less recombination between the electrons and positive ions.
 
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Khashishi said:
That is one way to ionize something. You can also use high voltage or ionizing radiation. It is easier to form a plasma at low densities, since there is less recombination between the electrons and positive ions.
Thank you, are there solid and liquid forms for all gasses too for example is there a liquid form for carbon?
 
Dakota said:
Thank you, are there solid and liquid forms for all gasses too for example is there a liquid form for carbon?

A gas will condense to form a liquid and vice versa, a liquid evaporates to form a gas. There is a triple point where you can have all three in equilibrium; solid, liquid and gas. Some solids do not melt to form a liquid, but will sublime to form a gas.
 
Kevin McHugh said:
A gas will condense to form a liquid and vice versa, a liquid evaporates to form a gas. There is a triple point where you can have all three in equilibrium; solid, liquid and gas. Some solids do not melt to form a liquid, but will sublime to form a gas.
Thank you but I didn't really understand. Can you explain for a amateur to understand?
 
Oops, I didn't really answer your question. It is possible to have liquid carbon at extreme pressure, I think. Almost every gas can be made into liquid and solid. But I am not sure if it is possible for every gas.
 
The point I was trying to make is that some solids will sublime to form a gas, and can exist in equilibrium between solid and gas. I think carbon sublimes rather than melts, but might be liquid at high enough pressure.
 
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So a high voltage rf emitter with say an antennae wrapped around a quartz tube would ionize carbon gases under pressure?
 

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